2011 Reprint of 1930 Two Volume American Edition. Complete. Two volumes bound into one. Volume One: "The Pure Theory of Money." Volume Two: "The Applied Theory of Money." Full facsimile of the original edition, not reproduced with Optical Recognition Software. Volumes One and Two of Keynes' classic work published in a handy one volume format. Exact facsimile of the original Edition. Keynes had begun a theoretical work to examine the relationship between unemployment, money and prices back in the 1920s. The work was originally published in 1930 in two volumes. We reproduce this two volume edition in one volume. A central idea of the work was that if the amount of money being saved exceeds the amount being invested - which can happen if interest rates are too high - then unemployment will rise. This is in part a result of people not wanting to spend too high a proportion of what employers pay out, making it difficult, in aggregate, for employers to make a profit.